Rubber-cutting-off machine



June 23, 1925.

L. J. PIANAROSA ET AL RUBBER CUTTING-OFF MACHINE Filed March lO, 1922 5Sheets-Sheet L.. J. PIANAROSA ET AL June 23, 925.

RUBE-R CUTTING -OFF MACHINE Filed March l0, 1922 5 Sheets-Sheet 2INVENTORS June 23, 1925.

L. .J PIANAROSA ET AL RUBBER CUTTING-OFF MACHINE Filed March lO, 1922 5Sheets-Sheet 5 luft L. J. PIANAROSA ET AL RUBBER CUTT G June 23, 192.5l

June 23, 192.54

L.. J. PIANAROSA ET AL.

RUBBER CUTTNGO` F 'MACHINL mwii Filed March lO,

I Ni yEN TORS ful ' in cutting lll-TNT FFICE.

ANI) XVILLIAM NICHOLAS, OF HLACK ROCK MFG, CO., OF

` 'IN'ECTICUT.

` Loin-.3.

JUE.

i i: i t

ini/mithin i', o ocu :nul uwlul in#'m'cuwnts in i'uhlicr cutting"marinaio;

:mail moro parti-sulzirl); to wlmi muy hc cullcrl :i ruhhcr outtingroflinziirhinc.

Tho machine is cspmziully tlrsigiwtl lor im: Mitt' i'cirit-ivcly shorthengjihs or Diocesi t, nu ot rulihu' Stock of vai-ion loims :tualilianwtri'q, @fisch ai# :irrligniiti'il :is hlfinl from which toVtoi'n'x couuneli'cizil vn-ofuct; in forming (lino and by Yulcunizingfor which muy confltitutc completed products fnlugitml for cmuniorcialpurpose?.

'll-n; iuincipzil chicca fil: tho inw-ut'` i A.

Y which will no :Pry

lcngth of tiinc: also to pio tim-hinfvfiich is cupuhlc of handlung." :ilum@ x'ulfict'i' oi' :Jhapcfs :iufl sizcfl ot whirl: uw thm; iwothu'iug:i giant vurioty ol' r im :wiifhs: l'uithci to ilo-sign :i mficlini, @otha it wir; lic mmh to cut upon sown; nl ziit ilitl'cxoutl in1l1 :inn

, :mtl tiumllj; to con u in u Ampli. zin/. rlui'fihlc mw, 'i tint it-=www nl' oiir-i'uthn :unl cosi, m" imi-lungi will ho nominal ronsiswutwith thc -unfwi Ul work accon'iplished.

With ttt-w und other objects in View tho nwntirw rvicloa and consists intho con- Quintin :vwl novol coiuhin'ition :mol nr i Hi miti l'icicim tormoro hilly #Iii-i5 i'hiqtrfitwl in the zicroznpuuying :of unil pointrflout in claims; hcrctf; f5 il` iy lining umlerstoofl thut vuriouf: in thcfoi-un propoitiom size nml ilctuils. ot construction within tlv:

he rcortoill lo withf minor f op of thc claimsY 111:15' uit :czkmitiucfrom th spirit or i 5 :if thv .fiilfffutzwim t i Simili@ chuzzutrr Milf?h 1U, 1922.

Serial N'o. 542,546.

likt or corrwpomling parts throughout the sowrul tigurca ot' thcaccompanying drawing forming i imrt of this Sl'iotfiticntion, :mtl @umuwhich,

l out@ :x trout elevation of our iinu wiwi i'u ilu-r Auttiim-oliinacl'iino, part of uf #tiny i tingv knife boing broken away; Figi.shows u plun vicw of the machine Jiowu iu FigV l;

l"if. l .Chmn4 nu @ncl View soon from thc i' ht of l"i I". l mill Q;

Fig, 5 i`J :in fr'nlorgctl tlctuil View of the iuwhvi Stock @humpingmechanisms;

Fig. t3 in u .'crticzil cross section taken on hw ('mi of Fig. l; und

'u l cross section taken on innprctirolnv on nu cnlnrgjcd Scalo of onoof tln` clutchcn. through which thc [coding rolls :zic opmatcil,

Tho machina ig (louhle ucting in that it iucluflcs two cutting' stationsunfl a rotary cutting lcuitc thut moves from one cutting Station to thcothcr nml servos to cut Jfrom two or uiorc loam of stock zit thc Sametime, :unl is t'urlhcr coustructcd So that thc rotutohlc cutting huit@will hcy I'wrlorining cutti punition thc gi'cutcr part of thc time, elothc uuu-hina is opcmtingf.

lrictlv shrinking. thc machine CoinpriScS a iotnri' uiting kuiitl that,is mountcd on a hill iournulml in tho Swinging end por tion ot" :icuri-ici' hiulcilly ilnountml to swing o @mi tvoA :mil so that thervknitc ultert into cngugcincut with tho .}.f -1icljf uw uuml liar@ ofstock. Those lr i, of sloth, in turn, are altcrnatcly fed loi-untilrt-luii'vfl tlitunccs in position for surccrtling cut?, anil :ircoperatively conii==rtcfl with tho driving parts of the machinc So thatthe tending of the one` har is srilwtwl whilcy thc lfniiic. is cuttinglrthrough the other. Thu cuttingI operations :irc yper lm'iuwl quickly hythc rotary cuttingr knifeI whining lmckmirtl and forward operating:than# upon om har of Stock :1nd then upon thv othcr, thciclui cuttingwhen moving iii rilhc" slircctiou.

i'ofvrring in flctuil to thechuratcters of 'irl'crciirc inrirltctl upontho drawings. it Will t e that, the opcmtive parts of the maf hun: uwsupported iu a frame Work whivh is of'aI table-like formation,comprising eorner legs 10y lower cross members 1.1 and top cross members12, 13 and 14.

15 represents the mein drivingr shaft provided with a, belt pulley 16through which power is applied to the machine. This driv ing shaft isjournaled in bearings 17--17 mounted upon the lower cross members 1l andes will be seen is positioned erosswise of the rneohine and midwaybetween the two ends thereof. This shaft not only serves ns anoperatingmeans tor other parts of the Inarhine, but also serves as abearing for the reciprocating Carrier 1S whit-.h pivotedly supportedthereon as at lli-19 in o. manner to permit its upper end portion,carrying the knife. to be rocked to and tro, The shaft 2() is `journaledin bearings 2l otthe carrier and supports the knife which is adjustahlymounted upon said shaft by ineens of the nuts "234 edjusteloly mountedupon the threaded portion ot the shaft. The rotatable cutting knife 22may he of any desired or preferred size and is adapted *o he removedfrom the shaft ZO and to be replaced by larger or smaller knives shouldoccasion require. A small sprocket rflitel 24 mounted upon this shaft2() and is connected to be driven by n rhein bolt troni the sprocketwheel '2li upon the uisin driving shaft l5. Said driving` wheel being;proper tionately larger than the driven wheel so that the letter and itsshaft and cuttingy blade may be operated at a higher rate ot speed.

Upon the main driving shaft lo is also mounted a gear Q7 that mesheswith and drives a larger gear 2b upon a uuu sha tt 29 positionedimmediately aboxe the before mentioned driving:r shaft.; and Yjournaledin the upper portions of the before mentioned bracket 17 that supportssaid driving shaft, A pair oi eooentries 80h30 carried on this shalt:1nd operatively positioned in the bil'uroated arms ot the `varrier.servos to oscillete the arms upon their pivots and to throw tho Carrierto and Vlro for the engagement und disengagement of the knil'o with thebars ot stock to be out. A third eccentric 3l is positioned upon tbeforward end ot the said shaft 22.* and is eounoetrd lo. a rod 'zl withdamping dericlf for eng-aging the separate bars of slot-lz .lin-ingr`the cutting' operations.

There are two of these clamping; devices, one for each side oi thenuirhine and each is obviouslyv looated in alignment therewith so thatthe steeltY will be passed through the clamps in the feedingvoperations. 'The two clamps shown are aiiln` in cfoiistriuztion and asnill be seen eaeh eoniprise a frana plate 23? Wwhioh is secured to theCross member l?) of the 'traine and is provided with an opening inwhiohvis positioned a fixed jaw 34 yand a movable jaw 35, the letterbeing held in an open position by means of a spring 36 and provided witha shank 37 that extends through the .frame plate und is engaged by oneot the cani faces 38 oll the lever 39 pivoted at 4U. This lever as willbe noted is provided with opposite cam faced end portions, one forengaging and operziting one clamp and the other for operating the secondclamp, and is so connected through the link 32 with the eecentrio as toinsure the closing oi' the one clamp :it a time when the other isreleased and to release the first mentioned clamp while closing; thesecond. The particular formation of the inner trices of the clampingjews may be varied to proporly conform to the peripheral surface of theditl'erent shapes of rubber bars to he passed therethrougl'i, so ns toinsure a uni l'ori'n engagement of the seme upon eli sides. The opening.as shown in the drawing formed by the pnrtieulnr shape of the inneredge of the damping dies illustrated such as would be adapted to clamp abar ot' rubber shoe heel stoel". lt will be obvious of =.onrse tl atround or square stock tan be similarly olanlprd by slightly ditlerentsluiped dies and likewise out to equally as good adiai'uage and thatdillbront shape rlnniping dies suitable i'or holding; two or more barsat the saine time. indy be substi tut/ed. As instructed the length o tthe pieces ol' rubber to be cnt are determined by the position o'l' thendjuskiing' screw Tl against whirl! the arios lill seats with efufhrotation of the raro.

These bars ot sto/ek (see Fig. (Si) are ted und stipportrsl, in positionto be operated A by the rotfr" hnit'o whit-h i rotated intr-rinvii .toot and at a right anglo to th(` said ba so that the linit'e if. innthrough the hars rrossnise in :i way to out oil relatively short{ii/eues which maj-7' be used for various purposes either in theirpresent relatiwly sott state. or may be shaped and vulf'uni/.ed :u: inthe art of rubber shoe heel melting. ThostA bars ot' stock are supportedin the tvro guido ways 'ell-stl secured upon the members l2. 13 and lltot the frame sind are alternately drawn i'orv ird in 'position to beclamped by the feed rolls and 48. The hars nro slidzibly suiriportvd onrolls *tft and Llli of the guide vta s and the said guide kways are:riso provided with loops lo through which the said stoel; is ted. Atthe left in Fig. l is shown but one pair of feed rolls. designated :isand 4?, whiohobviously serve to feed a single bar or rubber, whereas atthe rigfht oi said ligure and as is niore clearly shown in Fig. a seriesoil feed rolls il" and 43 are shown, and whereby thier bars ol' stort:ot smaller diameter may la, simultuneously fed. positioned clamped andrut. thereby inrreasinpr the output ofthe niarhine. so vfar as thenumber of pieces are concerned. From this it will be seen that lili;-

one or more pairs of rolls could be used upon either side so that if thesize of the stock to be cut is small a greater number of i-ieces couldbe cut off in the same period of time.

Aside from the feature of using one or a,

' series of feed rolls upon one or both sides of the machine, theremainder of the feeding mechanism as employed in our machine issubstantially the same and therefore the same reference characters willbe employed for designating the like parts of the two sets. In thisrespect it will be seen that the rolls 42 and 42 are mounted uponpositively'- driven feed shafts 47 that are journalled in the member 13of the frame and operated through beveled pinions 48 and anintermittently operated shaft 49. This feed shaft 47y is also providedwith a gear 50 which meshes with and drives a similar gear 51 upon4 thefeed shaft 52. The last named shaft is mounted in a block 53 slidabiymounted in thetop member 13 of the frame so that the roll or rolls uponone shaft may be adjusted to and from the roll or rolls upon the othershaft, to accommodate different thicknesses of stock. The twoslideblocks50l together with their shafts and feed rolls are designed to beadjusted in and out for different thicknesses of stock, by means oftheir adjusting screws 53 rotatably mounted in the frame and carrying ghand wheels 54 upon their outer ends. Fur- *ther differences inthickness of stock may be provided for by different thickness ot'feed-rolls or by any other suitable means. v Set screws 55 serve tosecure these adjusting screws in their required position.

The shaft 49 is journaled in brackets 5,6 hung from the frame member 14and is operated through a clutch. 57, the driven member 580i. which issecured to the said shaft while the driving member 59 of said clutch,

formed integral with the hub and gear 60 is loosely mounted upon thesaid shaft.

The movement imparted to the pinion and driving member of the frictionclutch is an alternate forward and backward rotation whereby alternatelyforward movements only are imparted to the driven clutch member.` Saiddriving clutch member being held against backward movement by a frictionbrake member 61 which' is pivotedly connected to the frame as at. 62 andprovided upon its outer end with a weight 63 which serves to hold thesaid brake against the hub of the driven clutch member so as to retainit against backward rotation.

The shaft 42') and its gear 60 are preferably operated through segments64 secured upon the rocker shaft 65 journaled in the frame and are.operated by cams 66 and 6T,

f mounted upon the outer end of the above mentioned shaft` 09, whichserves to throw 55 said shaft and segments downward against the actionof their springs 68 in a way to impart the alternate clockwise andcounterclockwise rotations to the said feed shafts 48. As shown in thedrawing an arm G9 is mounted upon each of the shafts 65 and links 70provided with rolls connect the arms with the cams 66 and 67 in a mannerto operate the former through the latter. The spring 68 has one endconnected to the racks and the other to the frame of the ma- ,chine, andserves to pull the racks up and hold the roll of the links against the(cams in :t way `to insure the operation of the said racks and feedmechanisms through the operation f the cams.

Having thus described our invention, what we claim and desire to secureby Letters Patent is:

1. The combination with two feeding devices, each for feeding a bar ofrubber or the like lengthwise, clamping devices for holding the saidbars of rubber in position after heilig fed, a rotary knife, a swingingcarrier pivotally mounted at one end and supporting the rotary knife atthe other end and operatively mounted as between the two said bars ofstock, and means for swinging thc carrier backward and forward aboutsaid pivot to bring the knife into engagement with the said stock.

2. In a rubber cutting-off machine, the combination with separatemechanisms for feeding bars of rubber stock or the like lengthwisepredetermined distances, devices for alternately clamping the said barsof stock, a carrier mounted to swing about a xed pivot between the twosaid bars of' rubber, a rotatable knife mounted in 'the carrier` andadapted to 'swing in an are at each side of a vertical line in a planeat rightl angles to the leng'th of the bars to alternately cut piecesfrom the said bars.

3. In a rubber cutting-oif machine, the combination with a frame, .of apairof feed rolls mounted thereon, .aI guide way in alignment with thefeed rolls to direct a bar of rubber or the like to the said rolls,means for alternately voperating -the said rolls to intermittently feedthe bar of rubber forward predetermined distances, clamping device forholding the stock in position, and a rotary knife operating in an a rcand in a plane at a right angle'to said bar in a way to cut the samecrosswise.

4. In a rubber cutting-off machine, a carrier mounted to swing about. afixed pivot, a rotary cutting knife mounted in the carrier, means onopposite sides of the carrier for supporting bars of rubber or the liketo be cut by the knife, means adapted to swing said carrier to bringsaid knife `alternately across the bars. and means for al 7 ternatelyfeeding the said bars of rubber in ,)ositiou to be eut` at a time whendisengaged by the said knife.

5. In a rubber cutting-ofi' machine, the combination of a carriermounted to swing about a fixed pivot-.1 rotary cutting knife mounted inthe carrier, means positioned in line with the throw of the carrier andknife for supporting bars of stock to be cut by the knife, means adaptedto swing said carrier to bring said knife alternatelyl across the bars,means for alternately feed-r guidingr means. for supporting anddirecting a bar of rubber or tbe like between said rolls` means foralternately operating the rolls to feed the bar, means for alternatelyclamping the bars when in positions of rest` a rotary cutting knife, andmeansl for swinging the knife in an arc to and from the rubber bars forcutting off the same.

7. In a rubber cutting-off machine. the combination of a feeding devicecomprising a paii` of feed shafts and feed rolls mounted thereon, saidfeed shafts beingr adjustable with respect to each other to accommodatelarger or smaller rolls. a' guide way for directing a continuous bar 'ofrubber or thc like between said rolls. means forwardly of the feed rollsfor positively'clamping the said bar in position, and a knife forwardlyof the clamping means for slicing off pieces from the said bar` with theend to be cut projecting from the clamping means.

8. In a rubber cutting-off machine, the combination with a pai1l of feedshafts each adapted to hold one or more feed rolls. a guiding means forsupporting and directing a bar of rubber or the like between said,

rolls` means for alternately 'operating the rolls to feed the liar.including a pair ot, shafts one. operated by the, other` a clutch' andoperating means for the clulchia rotary knife. .means between the rollsand knife for alternatel)v clamping tbe bars when in a position of rest,and means for feeding the knife to and from the rubber bars for eut--ting oil'l `the same.

9. In a rubber cutting-off machine. the

`combination of a feeding device comprising a pair of feed shafts, feedrolls mounted thereon, said feed shafts being operated one by the otherand means for adiustmg one with respect to the other to feed large orsmaller rolls, a guide. way for directing a bar of rubber or the likebetween said rolls, means forwardly of the rolls for clamping the saidbar in position, and a knife forwardly of thel clamping means forslicingef pieces ofrubber from the said bar.

`upon said shaft, a driven shaft mounted 10. In a .rubber cutting-offmachine, the,L combination of a fratrie, a driving shaft,a verticallydisposed carrier hingedly mgunted.' lire the upper end of the carrier,means for driv.k '-"i ing the latter shaft from the former, ai rotary Y,knife mounted on the driven shaft, a thi d shaft intermediate of the twosaid shafts having eccentric connections with the said carrier formoving the same backward andv forward, rubber bar feeding and clampingdevices positioned on opposite sides of the carrier in a manner to feedand support bars of rubber in position to be alternately cut off by theyrotary knife when brought into en- 80 gagemeut by the swinging movementof the cari-vu'.

ll. lu :r rubber cutting-off machine, the combination of a tira-me` adriving shaft, a vertically disposed carrier hingedly mounted upon saidshaft. a driven shaft mounted in the upper end of the carrier` means fordriving the latter shaft from the former, a rotary knife mounted uponthe driven shaft. a third shaft intermediate of the two said shaftsconnected to reciprocate the said carrier, means for driving the lastnamed shaft from the. driving shaft and means for driv' ing the knifeshaft from the driving shaft, a rubbeiibar feeding and gripping devicerpositioned at one side of the carrier to support stock in alignment withthe movement of the rotary knife, means for operating the Said feedingrdevice including a cam, and connections therefrom to the said feedingdevice.

12.` In a rubber cutting-off machine, the combination of a reciprocatingcarrier, a rotary cutting knife mounted in the carrier, means onopposite sides of the carrier for W5 supporting bars of rubber to becutb v the knife, means for feeding the said bars of rubber in position tohe eut, and means for. adjusting the feeding mechanism for changing thelengths of the. feed and pieces to be UU eut during the operation of themachine.

13. In a rubber cuttingoff machine, the combination with a cutter, of a.device for feeding bars of rubber. to be cut, comprisingr feed shaftsand feed rolls, means for alternately operating said feed shafts androlls predetermined amounts, a cam and rack for manipulating saidoperating device, andad-v1 justable means for limiting the amounigfthrow of the rack and the resultant amountof the feed of the rollsduring the operation of thtl machine.

H. In a rubber cutting-off machine, a earricr mounted to swing about afixed pivot, a rotary cutting knife mounted in the. carrier, a camshaft, cam means thereon adapted to yswing said carrier to and fro ateither side of a vertical line, means on opposite sides-of the carrierfor supporting bars of rubber or the like to be cut by the knife, andl

